This is the same principle as here above , but only in wood. Because wood is not so accurate is chosen for this solution for positioning the guides
Leading 5
This is an idea of myself. I don’t make it yet , but i think it works.
The guides can be fixed with glue.
Leading 6
The quality of the pictures are not so good, but i think you can see the meaning of it.
It’s so easy to make and it works.
You can replace the white plastic with a ball bearing like here below.
Leading 7
This idea is from Jaak Claesen. It’s to easy to think about it. I don’t know if it’s works , but the idea is good.
Leading 8
This leading can not made by your self. Ok the real hobby people can make it but not for this money. They are very cheap, but you need 4 for each ax. Oh i forgot something to say, please don’t get them out of the kitchen, you got a lot of trouble with your wife. I know it !